US4738166A - Helve of a hammer - Google Patents

Helve of a hammer Download PDF

Info

Publication number
US4738166A
US4738166A US06/909,194 US90919486A US4738166A US 4738166 A US4738166 A US 4738166A US 90919486 A US90919486 A US 90919486A US 4738166 A US4738166 A US 4738166A
Authority
US
United States
Prior art keywords
grip
hammer
passages
core
extending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/909,194
Other languages
English (en)
Inventor
Toshihiko Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US4738166A publication Critical patent/US4738166A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/01—Shock-absorbing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/04—Hand hammers; Hammer heads of special shape or materials with provision for withdrawing or holding nails or spikes

Definitions

  • This invention relates to a helve of a hammer which is used for striking nails or other objects, and, in particular, to a grip which covers the gripping part of the above-mentioned helve of the hammer.
  • the present invention provides an improved helve of a hammer which is easy to grip and provides good shock absorbing qualities.
  • the helve of the hammer of the present invention includes axial passages which extend along the length of the grip of the hammer, the passages providing reduced shock to the hand when the hammer strikes an object.
  • the helve of the hammer of the present invention comprises a core having the frontal part thereof fitted to the head of the hammer and a gripping portion covering the core with the gripping portion being a gummy elastic material having the axially extending passages therein.
  • FIG. 1 is a side view of the hammer having the grip according to the present invention thereon;
  • FIG. 2 is an end view of the hammer shown in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along the line A--A shown in FIG. 1;
  • FIG. 4 is a longitudinal sectional view taken along the line B--B shown in FIG. 2.
  • the grip 1 of the present invention is a gummy elastic material, for example, a synthetic resin or rubber having a relatively high-degree of hardness.
  • the grip 1 is fitted over a rear part of a core 6 of the helve of the hammer.
  • the core 6 comprises a metallic hollow tube which is attached at a front end thereof to a hammer head 5.
  • the grip 1 has a plurality of axially extending passages or holes 2 which extend along the longitudinal direction of the helve of the hammer. As shown in FIGS. 2 and 3, the passages 2 may consist of an upper and lower passage which are diametrically opposed to each other. Also, it can be seen from FIG. 4 that the axially extending passages 2 taper along the length thereof with the portions of the passages 2 closer to the hammer head becoming more narrow.
  • a plurality of concave grooves 3 which extend circumferentially around the grip portion 1 at spaced intervals along the longitudinal length of the helve.
  • a plurality of openings 4 extend radially inward from the surface of the grip 1 and serve to prevent the grip from slipping from a user's hand due to slight sweatiness of the hand when using the hammer. As can be seen from FIG. 1, the openings 4 are provided at spaced intervals which coincide with the circumferentially extending grooves 3.
  • the core 6 of the helve includes recessed portions 7 which form engaging grooves along the core 6 for receiving connecting portions 1a, 5a and 8a of the grip 1, the head of the hammer 5, and an intermediate portion of the helve 8, respectively.
  • the intermediate portion 8 may be formed of a material having a different color than the grip 1.
  • the intermediate portion 8 can be formed out of a wear-resisting material, for example, polyurethane resin which serves to protect the helve of the hammer when objects deflect off the hammer head 5 or when the hammer head 5 misses its target and the intermediate portion 8 comes in contact with the object intended to be hit or another object.
  • the engaging grooves formed by the recessed portions 7 in the core 6 of the helve anchor the parts 1a, 5a and 8a of the grip 1, the head of the hammer 5 and the intermediate portion 8, respectively, to thereby prevent rotation of these parts with respect to the core 6 of the helve.
  • the engaging grooves are diametrically opposed to each other and intersect a center line of the hammer head extending from the striking portion of the hammer head 5 to the claw portion thereof, the center line being parallel to the line B--B shown in FIG. 2.
  • the grip is made thicker above and below the engaging grooves as shown in FIGS. 3 and 4 with the axially extending passages extending longitudinally through these thicker portions of the grip 1.
  • the passages 2 are provided in the portion of the helve which absorbs the greatest impact forces.
  • the provision of the thicker parts of the grip 1 enables the passages to be more easily drilled or bored in the elastic grip material.
  • the hammer head 5 includes a nail-holding part 9 which can be used to set a nail into a surface into which the nail is to be driven.
  • the nail-holding part 9 consists of a pair of pinching pieces which hold a nail by its trunk part with the head of the nail held against a striking surface 10 of the hammer head 5.
  • a nail can be placed in the pinching pieces 9 with the trunk part or shank of the nail extending away from the striking wall 10 and the nail is set in a surface by striking the nail head against the striking wall 10.
  • the deformation-absorbing property of the axial passages allows proper gripping of the hammer when striking an object and the palm is pressed tightly to the surface of the grip due to the restoring force of the deformed axial passages so that the helve of the hammer remains closely fit with the palm to promote the grasping power of the hand without causing it to relax.
  • the helve of the present invention advantageously places the axial passages in the grip at positions along the direction of the striking force of the hammer and also along the direction of transmission of the shock vibration which occurs after striking an object. Since the pair of axial passages are provided in diametrically opposed relation to each other and along the line of grasping power and impulsive force at the time of striking with the hammer, the grasping power and impulsive force can be absorbed more effectively.
  • the grasping power and impulsive force acting on the gripping part at the time of striking the nail head or other object while grasping the helve part of the hammer are prevented from impacting directly on the palm of the hand and due to the prevention of shock vibration to the hand at the time of striking, the user is able to maintain a close fit of the grip in the user's palm and a tight grasp of the grip can be maintained.
  • the hammer constructed according to the present invention provides a safer working operation since the user can maintain a tight grip and thus maintain better control over the hammer without the fear of relaxing one's grasp on the helve due to otherwise painful vibration which occurs upon striking an object.
  • the propagating shock wave which results upon hitting an object is effectively absorbed by deformation of the grip material around the axial passages and thus a user is able to maintain a strong grip of the hammer without injury to the hand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
US06/909,194 1986-03-25 1986-09-19 Helve of a hammer Expired - Fee Related US4738166A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1986044349U JPS62156482U (de) 1986-03-25 1986-03-25
JP61-44349[U] 1986-03-25

Publications (1)

Publication Number Publication Date
US4738166A true US4738166A (en) 1988-04-19

Family

ID=12689033

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/909,194 Expired - Fee Related US4738166A (en) 1986-03-25 1986-09-19 Helve of a hammer

Country Status (2)

Country Link
US (1) US4738166A (de)
JP (1) JPS62156482U (de)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280739A (en) * 1992-12-03 1994-01-25 Liou Mou T Handle of a hammer having a shock absorbing configuration
GB2327634A (en) * 1997-07-24 1999-02-03 John Chen A hand tool handle with a shock absorbing airbag
US5926911A (en) * 1997-06-23 1999-07-27 Chen; John Shock absorbing handle grip for tool handle
US6016722A (en) * 1997-07-21 2000-01-25 Emerson Electric Co. Shock-absorbing claw hammer
WO2000009296A1 (en) * 1998-08-14 2000-02-24 The Stanley Works Vibration damped hammer
US6128977A (en) * 1997-04-09 2000-10-10 Emerson Electric Co. Shock-absorbing claw hammer
US6220128B1 (en) * 1999-05-04 2001-04-24 Bobby Hu Shock absorbing handle of hand impact tool
US6223627B1 (en) * 1999-12-14 2001-05-01 Yi Jing Jan Anti-shock structure of a hammer handle
US6311369B1 (en) * 1999-08-20 2001-11-06 Wavex Corporation Vibration dampening tool handle
US6336380B1 (en) * 1999-04-29 2002-01-08 Chung-Chiang Lin Pounding tool
US6338290B1 (en) * 2000-01-20 2002-01-15 Chung-Chiang Lin Pounding tool
US6370986B1 (en) 1999-03-25 2002-04-16 The Stanley Works Impact cushioning tool handle
US6477922B1 (en) 1998-04-29 2002-11-12 John A. Burnett Impact tool
US6511386B1 (en) * 2001-09-06 2003-01-28 D.B. Consolidated Enterprises, Inc. Hand grip attachment with mechanical means for adjusting firmness and feel
US20030084756A1 (en) * 1996-10-18 2003-05-08 Schroder Kurt A Vibration reducing grip for clubs and racquets
US20030145686A1 (en) * 1996-10-18 2003-08-07 Board Of Regents, The University Of Texas System Impact instrument
US6763747B1 (en) 1997-04-09 2004-07-20 Emerson Electric Co. Shock absorbing hammer and handle assembly
US20040231100A1 (en) * 2003-05-19 2004-11-25 Credo Technology Corporation Cushion grip handle
DE10314226B4 (de) * 2002-04-01 2005-09-15 Bobby Hu Handgriffhülle
US20060257605A1 (en) * 2005-05-10 2006-11-16 Germain Belanger Shaft for Tools, A Tool and a Method of Fabrication Thereof
DE202011001497U1 (de) 2010-04-24 2011-03-24 Dako Werk Dowidat Kg Hammer, insbesondere Vorschlaghammer
US20120180608A1 (en) * 2011-01-13 2012-07-19 Ames True Temper, Inc. Wood handle with overmold and method of manufacture
USD752938S1 (en) 2014-03-14 2016-04-05 Estwing Manufacturing Company, Inc. Hammer
USD758818S1 (en) * 2013-09-03 2016-06-14 Home Depot Product Authority, Llc Tool handle
USD760055S1 (en) * 2013-09-03 2016-06-28 Home Depot Product Authority, Llc Tool handle
USD769688S1 (en) * 2013-09-03 2016-10-25 Home Depot Product Authority, Llc Tool handle
US20180326570A1 (en) * 2015-08-17 2018-11-15 Mayhew Steel Products, Inc. Pry bar handle
US10272559B2 (en) 2014-11-12 2019-04-30 Black & Decker Inc. Side handle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4403341B2 (ja) * 2000-07-28 2010-01-27 エフシー総研株式会社 ソケットハンマー

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581647A (en) * 1924-12-10 1926-04-20 William D Layton Hammer handle
US2467284A (en) * 1946-06-25 1949-04-12 Dennis F Williams Handle for hammers
US2603260A (en) * 1948-01-10 1952-07-15 Axel E Floren Hammer having shock-absorbing handle
US2884969A (en) * 1957-08-23 1959-05-05 Vaughan & Bushnell Mfg Co Hammer construction with shock absorbing means
US2960133A (en) * 1958-08-18 1960-11-15 Stanley Works Hammer butt plug
US3089525A (en) * 1960-10-07 1963-05-14 John P Palmer Tool handle
US3613753A (en) * 1969-04-21 1971-10-19 Vaughan & Bushnell Mfg Co Hollow hammer handle with longitudinally tensioned glass fibers
US4548248A (en) * 1984-02-27 1985-10-22 Riemann Herbert F Handle for striking tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1581647A (en) * 1924-12-10 1926-04-20 William D Layton Hammer handle
US2467284A (en) * 1946-06-25 1949-04-12 Dennis F Williams Handle for hammers
US2603260A (en) * 1948-01-10 1952-07-15 Axel E Floren Hammer having shock-absorbing handle
US2884969A (en) * 1957-08-23 1959-05-05 Vaughan & Bushnell Mfg Co Hammer construction with shock absorbing means
US2960133A (en) * 1958-08-18 1960-11-15 Stanley Works Hammer butt plug
US3089525A (en) * 1960-10-07 1963-05-14 John P Palmer Tool handle
US3613753A (en) * 1969-04-21 1971-10-19 Vaughan & Bushnell Mfg Co Hollow hammer handle with longitudinally tensioned glass fibers
US4548248A (en) * 1984-02-27 1985-10-22 Riemann Herbert F Handle for striking tool

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280739A (en) * 1992-12-03 1994-01-25 Liou Mou T Handle of a hammer having a shock absorbing configuration
US7178428B2 (en) 1996-10-18 2007-02-20 Board Of Regents The University Of Texas System Impact instrument
US20030145686A1 (en) * 1996-10-18 2003-08-07 Board Of Regents, The University Of Texas System Impact instrument
US20030084756A1 (en) * 1996-10-18 2003-05-08 Schroder Kurt A Vibration reducing grip for clubs and racquets
US6755096B2 (en) * 1996-10-18 2004-06-29 Board Of Regents, The University Of Texas System Impact instrument
US20050109164A1 (en) * 1996-10-18 2005-05-26 Schroder Kurt A. Impact instrument
US6763747B1 (en) 1997-04-09 2004-07-20 Emerson Electric Co. Shock absorbing hammer and handle assembly
US6128977A (en) * 1997-04-09 2000-10-10 Emerson Electric Co. Shock-absorbing claw hammer
US5926911A (en) * 1997-06-23 1999-07-27 Chen; John Shock absorbing handle grip for tool handle
US6016722A (en) * 1997-07-21 2000-01-25 Emerson Electric Co. Shock-absorbing claw hammer
GB2327634B (en) * 1997-07-24 1999-11-03 John Chen A hand tool handle with shock absorbent airbag
GB2327634A (en) * 1997-07-24 1999-02-03 John Chen A hand tool handle with a shock absorbing airbag
US6477922B1 (en) 1998-04-29 2002-11-12 John A. Burnett Impact tool
US6202511B1 (en) * 1998-08-14 2001-03-20 The Stanley Works Vibration damped hammer
WO2000009296A1 (en) * 1998-08-14 2000-02-24 The Stanley Works Vibration damped hammer
US6370986B1 (en) 1999-03-25 2002-04-16 The Stanley Works Impact cushioning tool handle
US6336380B1 (en) * 1999-04-29 2002-01-08 Chung-Chiang Lin Pounding tool
US6220128B1 (en) * 1999-05-04 2001-04-24 Bobby Hu Shock absorbing handle of hand impact tool
AU776863B2 (en) * 1999-08-20 2004-09-23 Wavex Corporation Vibration dampening tool handle
US6311369B1 (en) * 1999-08-20 2001-11-06 Wavex Corporation Vibration dampening tool handle
US6223627B1 (en) * 1999-12-14 2001-05-01 Yi Jing Jan Anti-shock structure of a hammer handle
US6338290B1 (en) * 2000-01-20 2002-01-15 Chung-Chiang Lin Pounding tool
US6511386B1 (en) * 2001-09-06 2003-01-28 D.B. Consolidated Enterprises, Inc. Hand grip attachment with mechanical means for adjusting firmness and feel
DE10314226B4 (de) * 2002-04-01 2005-09-15 Bobby Hu Handgriffhülle
US20040231100A1 (en) * 2003-05-19 2004-11-25 Credo Technology Corporation Cushion grip handle
US7770262B2 (en) * 2003-05-19 2010-08-10 Robert Bosch Tool Corporation Cushion grip handle
US20060257605A1 (en) * 2005-05-10 2006-11-16 Germain Belanger Shaft for Tools, A Tool and a Method of Fabrication Thereof
DE202011001497U1 (de) 2010-04-24 2011-03-24 Dako Werk Dowidat Kg Hammer, insbesondere Vorschlaghammer
EP2380706A1 (de) * 2010-04-24 2011-10-26 Dako Werk Dowidat KG Hammer, insbesondere Vorschlaghammer, und Verfahren zur Herstellung eines sochen Hammers
US20120180608A1 (en) * 2011-01-13 2012-07-19 Ames True Temper, Inc. Wood handle with overmold and method of manufacture
US10974423B2 (en) * 2011-01-13 2021-04-13 The Ames Companies, Inc. Wood handle with overmold and method of manufacture
US11964413B2 (en) 2011-01-13 2024-04-23 The Ames Companies, Inc. Wood handle with overmold and method of manufacture
USD758818S1 (en) * 2013-09-03 2016-06-14 Home Depot Product Authority, Llc Tool handle
USD760055S1 (en) * 2013-09-03 2016-06-28 Home Depot Product Authority, Llc Tool handle
USD769688S1 (en) * 2013-09-03 2016-10-25 Home Depot Product Authority, Llc Tool handle
USD826676S1 (en) 2013-09-03 2018-08-28 Home Depot Product Authority, Llc Hammer
USD752938S1 (en) 2014-03-14 2016-04-05 Estwing Manufacturing Company, Inc. Hammer
US10272559B2 (en) 2014-11-12 2019-04-30 Black & Decker Inc. Side handle
US20180326570A1 (en) * 2015-08-17 2018-11-15 Mayhew Steel Products, Inc. Pry bar handle
US10710231B2 (en) * 2015-08-17 2020-07-14 Mayhew Steel Products, Inc. Pry bar handle

Also Published As

Publication number Publication date
JPS62156482U (de) 1987-10-05

Similar Documents

Publication Publication Date Title
US4738166A (en) Helve of a hammer
EP1105255B1 (de) Vibrationsgedämpfter hammer
CA1143969A (en) Handle for a hand-held device
US4044625A (en) Vibration isolating hand grip for shank of a percussive chisel
US6009600A (en) Tool handle
US3438413A (en) Axially rotatable tool and handle therefor
US6220128B1 (en) Shock absorbing handle of hand impact tool
US6076431A (en) Striking tools with deflector grips
US4172483A (en) Percussion head tool
US4154273A (en) Hammer
US4546976A (en) Reinforced plastic baseball bat with separate handle section
US3229738A (en) Claw hammer cap
US4718313A (en) Hammer head for a hammer
ES2259716T3 (es) Herramienta de impacto con cabezal antiesquirlas.
US4379475A (en) Wedging apparatus useful for log splitting
US5590868A (en) Hammer having a gripping surface with recesses
US2781805A (en) Hammer with spring shank handle
US11583993B2 (en) Anti-kickback axe
US4773281A (en) Body protecting handle grips
US5295687A (en) Impact weapon
US4811634A (en) Hammer hat
JPH0344463Y2 (de)
CA2242178C (en) Striking tools with deflector grips
US2920667A (en) Hammer with deflecting shield
US2366249A (en) Toolholder and guard

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 20000419

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362